Are there variations in sperm head morphology that affect swimming performance?

The testes in a male foetus are formed inside the abdomen. ... This is because the testes do not produce sperm if they are stuck in the groin or abdomen. Fertility is being able to get pregnant or to make someone pregnant (conceive a child). This information will help you to: Understand how Crohn's or Colitis may ... Sep 11, 2019 ... You can expect to have regular check-ups throughout the pregnancy. In men, hyperthyroidism can cause a marked reduction in sperm count, ... Semen, also known as seminal fluid, is a bodily fluid that contains spermatozoa which is secreted by the male gonads (sexual glands) and other sexual organs ... New life begins when an egg from a woman is fertilised by sperm from a man. Eggs (ova) are made in the ovaries, and sperm in the testicles. Oct 1, 2024 ... ... sperm a man produces and the movement of the sperm. This research is ... Every effort is made to ensure that all our information is correct and up ... The following is an overview of the male reproductive anatomy: Scrotum. The bag of skin that holds and helps to protect the testicles. The testicles make sperm ... Semen: The fluid made by male sex glands that contains sperm. Sexual ... This information is designed as an educational aid for the public. It offers ... Mar 31, 2024 ... Sperm are produced and released by the male reproductive organs ... information and services. Learn more about A.D.A.M.'s editorial policy ... Apr 7, 2025 ... ... male, sperm cells are produced by the testes ... Each egg and sperm produced has slightly different genetic information carried in the ...